Beth C. Seidenberg - May 31, 2023 Form 4 Insider Report for Atara Biotherapeutics, Inc. (ATRA)

Role
Director
Signature
/s/ Jeff Kiekhofer, Attorney-in-Fact
Stock symbol
ATRA
Transactions as of
May 31, 2023
Transactions value $
$0
Form type
4
Date filed
6/2/2023, 08:06 PM
Previous filing
Jun 1, 2023
Next filing
Jun 13, 2023

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ATRA Common Stock Award $0 +57K +97.12% $0.00 116K May 31, 2023 Direct F1
holding ATRA Common Stock 1.82M May 31, 2023 See footnote F3
holding ATRA Common Stock 54.4K May 31, 2023 See footnote F4
holding ATRA Common Stock 197 May 31, 2023 See footnote F5
holding ATRA Common Stock 197 May 31, 2023 See footnote F6

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction ATRA Non-Qualified Stock Option (Right to Buy) Award $0 +79.5K $0.00 79.5K May 31, 2023 Common Stock 79.5K $1.53 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These restricted stock units shall vest on the earlier of May 31, 2024 or the date of the next annual meeting of stockholders, subject to the Reporting Person's continuous service.
F2 The option shall vest on the earlier of May 31, 2024 or the date of the next annual meeting of stockholders, subject to the Reporting Person's continuous service.
F3 The shares are directly held by Kleiner Perkins Caufield & Byers XV, LLC ("KPCB XV"). All shares are held for convenience in the name of "KPCB Holdings, Inc., as nominee". The managing member of KPCB XV is KPCB XV Associates, LLC ("XV Associates"). The voting and dispositive control over the shares is shared by individual managing members of XV Associates, none of whom has veto power.
F4 The shares are directly held by KPCB XV Founders Fund, LLC ("KPCB XV FF"). All shares are held for convenience in the name of "KPCB Holdings, Inc., as nominee". The managing member of KPCB XV FF is XV Associates. The voting and dispositive control over the shares is shared by individual managing members of XV Associates, none of whom has veto power.
F5 Shares held by the Michael J. Seidenberg Irrevocable Trust, established July 1, 2013, of which the Reporting Person is a trustee.
F6 Shares held by the Samuel B. Seidenberg Irrevocable Trust, established July 1, 2013, of which the Reporting Person is a trustee.

Remarks:

Exhibit List: Exhibit 24 - Power of Attorney